Steam explosion changed the fiber structure of biomass only by
made the microfibrils separated from the initial connected structure
and fully exposed (Kim and Lee, 2005). The effect of UHPE
on the microstructures is much stronger than that of steam explosion
pretreatment. In this research, the NaOH + UHPE pretreatment
significantly increase the enzymatic digestibility of bamboo shoots
and 2-year-old bamboo to 100%. The 5-year-old bamboo substrates
also had an 85% glucose yield.